2002 Mini Cooper Countryman U0121 Fault Code Check

When you check 2002 Mini Cooper Countryman car engine light came on code U0121 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Mini manufacturer may have a different definition for the U0121 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

Do you have fresh, clean fuel in the tank? If it's empty, fill it up and go! If it's full, check U0121 2002 2002 Mini Cooper Countryman that the fuel shut-off valve is open and that it is clean. Stale fuel, dirt and debris are the most common cause of outdoor power equipment not starting properly. If you store equipment with untreated gas in the tank, it can lead to engine damage.

2002 Mini Cooper Countryman U0121 OBD-II Diagnostic Network (U) Trouble Code Description 2002 Mini Cooper Countryman car U0121 OBD-II Trouble Code Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and comm Reason For 2002 Mini Cooper Countryman U0121 Code The reason of 2002 Mini Cooper Countryman U0121 OBD-II Fault Code Check is U0121 Lost Communication With Electronic Brake Control Module.

2002 Mini Cooper Countryman U0121 Possibble Fix Ways :

There are a number of reasons which can cause a car engine not to start, the most common, of course, being a dead battery. Pay special attention to the noise it makes when you turn the key. Is the car completely silent? If so, there may be a problem with your battery terminal cable connections. Does your car crank over but not start? Then it may be your spark plugs or fuel supply to your engine. In any case, if you're out on the road, try jumpstarting your car then investigating the cause further when you're safely back at home.

If your vehicle failed a U0121 2002 2002 Mini Cooper Countryman test and the U0121 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses U0121 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look U0121 2002 2002 Mini Cooper Countryman: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.

What does fault code U0121 mean for 2002 Mini Cooper Countryman ? What does a diagnostic reading U0121 mean for 2002 Mini Cooper Countryman ? How to fix OBD2 Code U0121 for 2002 Mini Cooper Countryman ? What do we know about U0121 code for 2002 Mini Cooper Countryman ?